Article
Engineering, Civil
Yongshan Jiang, Zhaofei Liu
Summary: This study calculated the monthly actual evapotranspiration (ETa) based on observed precipitation and runoff data in three river basins. The performance of three complementary relationship methods in simulating ETa was evaluated. The results showed that all three methods accurately simulated monthly ETa, and ETa exhibited spatial and annual trends. The study also found positive correlations between ETa and precipitation, temperature, wind, and hours of sunshine.
WATER RESOURCES MANAGEMENT
(2022)
Article
Biodiversity Conservation
Yang Chen, Tianjie Lei, Jiangzhou Xia, Yan Tu, Yidong Wang, Zhong-Liang Wang
Summary: This study used the Bayesian model averaging method to simulate high-resolution evapotranspiration (ET) values in the Haihe River Basin (HRB) and found that the BMA ET values had higher accuracy and credibility compared to individual models. The BMA ET values showed a significant increasing trend and could be applied to various fields such as regional microclimate change, agricultural policy making, and water security.
ECOLOGICAL INDICATORS
(2022)
Article
Environmental Sciences
Teng Ma, Taihua Wang, Dawen Yang, Shuyu Yang
Summary: The mountainous region of the Haihe River basin has a crucial role in providing water resources for nearby mega-cities and cropland. Afforestation projects have led to increased vegetation and carbon uptake, but have also caused a decline in annual runoff, posing a threat to water security. The trade-off relationship between water yield and carbon uptake needs further exploration.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Water Resources
Papa Malick Ndiaye, Ansoumana Bodian, Lamine Diop, Alain Dezetter, Etienne Guilpart, Abdoulaye Deme, Andrew Ogilvie
Summary: This study evaluated the trends of reference evapotranspiration (ET0) in the Senegal River Basin, finding that regional climate models (RCMs) were more robust than global circulation models (GCMs). ET0 was found to be more sensitive to relative humidity, maximum temperature, and solar radiation, with significant increases projected in ET0, maximum and minimum temperatures in the period 2036-2065.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2021)
Article
Environmental Sciences
Xiaotong Guo, Dan Meng, Xuelong Chen, Xiaojuan Li
Summary: This study assessed seven types of ET products in the Haihe River Basin in China using various validation methods. The results showed higher accuracy when the flux towers validation method was used, and some products were overestimated or underestimated when the water balance validation method was used. The uncertainty analysis indicated that GLEAM_ET had the lowest relative uncertainty.
Article
Agronomy
Arun Bawa, Gabriel B. Senay, Sandeep Kumar
Summary: In this study, Landsat imagery and remote sensing-based ETa modeling approaches were used to analyze crop water use in the Missouri River Basin. The study found regional variations in crop water use and identified factors influencing the changes in crop water use. The results of this study are of significant importance for improving land and water management practices.
AGRICULTURAL WATER MANAGEMENT
(2022)
Article
Water Resources
Ian McNamara, Oscar M. Baez-Villanueva, Ali Zomorodian, Saher Ayyad, Mauricio Zambrano-Bigiarini, Modathir Zaroug, Azeb Mersha, Alexandra Nauditt, Milly Mbuliro, Sowed Wamala, Lars Ribbe
Summary: This study focused on evaluating the performance of precipitation (P) and actual evapotranspiration (ETa) products over the Nile Basin in Africa, finding the best-performing products for both variables. The study used a four-step procedure to assess the products and demonstrated how they can be evaluated over data-scarce conditions using a transferable methodology. The results provide new hydrological insights for the region, particularly in understanding the seasonality of terrestrial water storage.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2021)
Article
Engineering, Civil
Yao Li, Wensheng Wang, Guoqing Wang, Qiaofeng Tan
Summary: This study proposes a hybrid machine learning model, called the hybrid CNN-RF model, for regional actual evapotranspiration (AET) estimation. The results show the excellent performance of the CNN-RF model and its superiority over other models. The CNN-RF model demonstrates high correlation with observed and simulated AET, indicating strong spatial generalization ability. Additionally, the study reveals high correlation between AET and air temperature and precipitation, highlighting the impact of climate change on water and energy cycles.
JOURNAL OF HYDROLOGY
(2022)
Article
Green & Sustainable Science & Technology
Muhammad Amin, Mobushir Riaz Khan, Sher Shah Hassan, Muhammad Imran, Muhammad Hanif, Irfan Ahmad Baig
Summary: This study analyzed the rainfall and potential evapotranspiration trends in Punjab, Pakistan from 1993 to 2016 using satellite imagery and climatic data. The results showed a decreasing trend in rainfall and an increasing trend in potential evapotranspiration. The southern region of Punjab had lower rainfall and a faster increase in potential evapotranspiration compared to the northern part.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2023)
Article
Engineering, Civil
Rubina Ansari, Muhammad Usman Liaqat, Giovanna Grossi
Summary: This study provides a comprehensive assessment of the key components of terrestrial water budget and their temporal trends in the Upper Jhelum Basin using observed and gridded datasets. The results indicate an imbalance in the water budget, mainly due to high uncertainties in precipitation. Despite these uncertainties, the study offers important insights into the dynamics and spatiotemporal variability of the water budget, which can be used for further impact assessment studies.
JOURNAL OF HYDROLOGY
(2022)
Article
Engineering, Civil
Yuefeng Yao, Azim U. Mallik
Summary: The distribution of daily ETa in the Lijiang River Basin during the dry season was mapped using the SSEBop model and Landsat 8 images. Water stress was assessed using the CWSI. The study highlights the importance of managing water resources in response to climate change and economic development in specific regions.
JOURNAL OF HYDRO-ENVIRONMENT RESEARCH
(2022)
Article
Engineering, Environmental
Akshita Choudhary, Susanta Mahato, P. S. Roy, Deep Narayan Pandey, P. K. Joshi
Summary: Aridity is a climatic phenomenon characterized by water shortage, which affects ecosystems' carrying capacity. It is represented by Aridity Index (AI), calculated based on rainfall and temperature. Assessing aridity is crucial for understanding global climate change. In agrarian countries like India, even a slight increase in drylands area can have significant economic and social impact. AI helps in identifying different climatic classes by analyzing temperature and precipitation trends.
STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT
(2023)
Article
Forestry
Yufu Li, Xinxin Sui, Yunjun Yao, Haixia Cheng, Lilin Zhang, Lu Wang, Jing Ning, Ke Shang, Junming Yang, Ruiyang Yu, Lu Liu, Xiaozheng Guo, Zijing Xie
Summary: This study evaluated six satellite-based terrestrial latent heat flux products in the vegetation dominated Haihe River basin of North China. The results showed that the GLASS product performed the best at site scale and provided comparable performance at basin scale against WBET estimates.
Article
Environmental Sciences
Kirubel Mekonnen, Assefa M. Melesse, Tekalegn Ayele Woldesenbet
Summary: The study assessed the suitability of Satellite Rainfall Estimates in simulating high flows and AET, finding that rainfall inputs and model complexity significantly impact the simulation of streamflow and AET. Streamflow calibration also affects AET simulation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Water Resources
Meiling Zheng, Xingwei Chen, Weifang Ruan, Huaxia Yao, Zipeng Gu, Kaili Geng, Xiaocheng Li, Haijun Deng, Ying Chen, Meibing Liu
Summary: This study focused on the spatiotemporal changes in water cycle components in the Minjiang River Basin of China. By correcting the evapotranspiration (ET) products, a reasonable annual dataset of water cycle components was constructed. The study found that from 2000 to 2019, precipitation and runoff showed nonsignificant increasing trends, while ET showed a significant growth trend. The relationships among the water cycle components remained relatively stable.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2023)
Article
Engineering, Civil
Kun Xie, Jong-Suk Kim, Linjuan Hu, Hua Chen, Chong-Yu Xu, Jung Hwan Lee, Jie Chen, Sun-Kwon Yoon, Di Zhu, Shaobo Zhang, Yang Liu
Summary: Intelligent scheduling of urban drainage systems is seen as a sustainable flood management strategy. This study proposes a new intelligent scheduling model (ISM) that combines the SWMM and a multiobjective particle swarm optimization algorithm to minimize flooding volume, water level fluctuation, and operational cost. The results show that the ISM-based strategies effectively reduce flooding, water level fluctuation, and operational costs, outperforming climate change mitigation and other adaptation strategies.
WATER RESOURCES MANAGEMENT
(2023)
Article
Physics, Multidisciplinary
Lei-Lei Tang, Shun-Ping Shi, Yong Song, Jia-Bao Hu, Kai Diao, Jing Jiang, Zhan-Jiang Duan, De-Liang Chen
Summary: Density functional theory (DFT) was used to investigate the stable structures and adsorption energy of Zr-n (n = 2-5) clusters with a single water molecule. The results showed a clear linear relationship between the adsorption energy and energy gaps of the clusters. Reaction path calculations revealed that the water molecule can react with the clusters to form Zr n O (n = 2-5), releasing hydrogen in exothermic reactions. Among the clusters, Zr-4 exhibited the highest reactivity with the water molecule. Natural population analysis (NPA) and density of states (DOS) provided insight into the hydrogen production and orbital properties, suggesting further reactivity of Zr n O (n = 2-5) with additional water molecules. This study enhances the understanding of Zr's chemical reactivity and its potential for catalysis and hydrogen production.
Article
Meteorology & Atmospheric Sciences
Andreas F. Prein, Nikolina Ban, Tinghai Ou, Jianping Tang, Koichi Sakaguchi, Emily Collier, Sanjay Jayanarayanan, Lu Li, Stefan Sobolowski, Xingchao Chen, Xu Zhou, Hui-Wen Lai, Shiori Sugimoto, Liwei Zou, Shabeh ul Hasson, Marie Ekstrom, Praveen Kumar Pothapakula, Bodo Ahrens, Romilly Stuart, Hans Christian Steen-Larsen, Ruby Leung, Danijel Belusic, Julia Kukulies, Julia Curio, Deliang Chen
Summary: The Tibetan Plateau, also known as the Third Pole, is an important freshwater source for Asia. However, due to challenges in weather and climate modeling, the future of this region remains highly uncertain. The Convection-Permitting Third Pole (CPTP) project aims to revolutionize our understanding of climate change impacts on the Tibetan Plateau through ensemble-based, kilometer-scale climate modeling.
Article
Environmental Sciences
Zhengyao Lu, Deliang Chen, Klaus Wyser, Ramon Fuentes-Franco, Stefan Olin, Qiong Zhang, Mousong Wu, Anders Ahlstrom
Summary: This study investigates the low-frequency variability of global vegetation and its connection to climate modes. The results show that the variability in vegetation greenness during the growing season is largely influenced by ENSO-d, PDO, and AMO climate modes, which have played a significant role in the greening of the Earth over the past decades.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Engineering, Multidisciplinary
Zuohua Fu, Hui Chen, Hui Peng, Wei Li, Deliang Chen, Zheng Meng, Hao Jie
Summary: As a new method, the instrumented sharp indentation technique is proposed for obtaining the surface residual stress of metallic materials. It is simple to use, applicable in-situ, and allows for measurements in the nano-to-macro range. The unified equivalent material indentation (UEMI) model is established to measure both equi-biaxial and uniaxial residual stresses within metallic structural materials. Only five parameters need to be calibrated via finite element analysis (FEA) in this model. The novel model is successfully verified using simulated materials from FEA and experimental data from seven metallic materials found in the references, showing good agreement with the pre-applied residual stress.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2023)
Article
Engineering, Civil
Ximeng Xu, Xiaobo Yun, Qiuhong Tang, Huijuan Cui, Jie Wang, Lu Zhang, Deliang Chen
Summary: Climate change is expected to increase rainfall erosivity over the Lancang-Mekong River Basin, especially under high emission scenarios. Summer rainfall erosivity in June to August is projected to account for the majority of annual rainfall erosivity. These changes can provide insights into the risk of soil erosion under climate change in the region.
JOURNAL OF HYDROLOGY
(2023)
Article
Engineering, Civil
Chengyun Wang, Jie Chen, Lei Gu, Guiyang Wu, Shanlin Tong, Lihua Xiong, Chong-Yu Xu
Summary: Soil moisture drought is influenced by both water supply and demand. Previous studies have used statistical multiple linear regression, machine learning, and modeling experiments to understand the mechanisms driving soil moisture drought, but these methods fail to consider the collinearity and interactions of climate variables. This study used a path analysis method to quantify the contributions of key drivers to soil moisture drought and revealed the relationships between atmospheric movement state and soil moisture drought. The results showed that precipitation deficits had a dominant effect on interannual variation of soil moisture drought, while increasing potential evapotranspiration only marginally intensified drought. The interactions among precipitation, potential evapotranspiration, and atmospheric vapor movement state were important for understanding drought development mechanisms.
JOURNAL OF HYDROLOGY
(2023)
Article
Engineering, Civil
Danielle M. Barna, Kolbjorn Engeland, Thordis L. Thorarinsdottir, Chong-Yu Xu
Summary: Design flood values are crucial for making decisions related to land use planning, infrastructure design, and disaster mitigation. The Flood-Duration-Frequency (QDF) models extend the standard flood frequency analysis framework and provide a better understanding of floods with different durations. The multiscaling extension to existing QDF models improves the modeling of short-duration events and events with long return periods.
JOURNAL OF HYDROLOGY
(2023)
Review
Geosciences, Multidisciplinary
Julia Kukulies, Hui-Wen Lai, Julia Curio, Zhe Feng, Changgui Lin, Puxi Li, Tinghai Ou, Shiori Sugimoto, Deliang Chen
Summary: The climate system of the Third Pole region is highly sensitive to global warming, and mesoscale convective systems (MCSs) play a vital role in this system. The impact of MCSs on precipitation and flood risk in the downstream regions is significant, but there are methodological and regional differences in studying MCSs. By using a common framework, we can understand the characteristics, mechanisms, and impact of MCSs on seasonal and extreme precipitation in the region, and address knowledge gaps, such as the feedback of MCSs to the climate system, the impact of changing climate on MCS characteristics, and the assessment of flood and drought risks associated with changes in MCS frequency and intensity.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Xiuping Li, Lei Wang, Baoyi Hu, Deliang Chen, Ruishun Liu
Summary: Mountains are important water sources for downstream areas, and their water resources are highly sensitive to climate change. Glacier retreat is the main cause of depletion in mountain water resources, but the contribution rate of glacier changes to total water storage changes is unknown. Globally, glacial melting accounted for about 49% of total water storage decline during 2006-2015. The contribution ranges from -23% to 728% in mountain regions and -21% to 99% in watersheds of the Third Pole and surroundings.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Environmental Sciences
Shanlin Tong, Wenpan Li, Jie Chen, Rui Xia, Jingyu Lin, Yan Chen, Chong -Yu Xu
Summary: This study developed a modeling framework to simulate water quality at grid scale and interpret the contributions of drivers to water quality in the Yangtze River basin. The results demonstrated significant changes in the response of water quality to drivers, with air temperature playing a crucial role in key water quality indicators.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Civil
Kangling Lin, Sheng Sheng, Hua Chen, Yanlai Zhou, Yuxuan Luo, Lihua Xiong, Shenglian Guo, Chong -Yu Xu
Summary: This study proposes an approach and integrates the hydrological model with Intelligent Adaptation Parameters to solve the problem of parameter instability in traditional hydrological modeling methods. It also reveals the relationship between the model and floods.
JOURNAL OF HYDROLOGY
(2023)
Article
Meteorology & Atmospheric Sciences
Mengnan Ma, Jianping Tang, Tinghai Ou, Deliang Chen
Summary: This study investigates the spatiotemporal characteristics of subdaily extreme precipitation over the Tibetan Plateau. The results show that there will be significant changes in precipitation amount and extreme precipitation frequency in the future. Additionally, the complex topography of the region plays a crucial role in shaping the nonuniform distribution of precipitation extremes.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Multidisciplinary Sciences
Ziqian Zhong, Bin He, Ying-Ping Wang, Hans W. Chen, Deliang Chen, Yongshuo H. Fu, Yaning Chen, Lanlan Guo, Ying Deng, Ling Huang, Wenping Yuan, Xingmin Hao, Rui Tang, Huiming Liu, Liying Sun, Xiaoming Xie, Yafeng Zhang
Summary: The influence of atmospheric vapor pressure deficit (VPD) on plant photosynthesis is well recognized, but its interactions with air temperature and soil moisture hinder a complete understanding of its impact on vegetation production. By excluding interactive effects, this study reveals a diverging response of productivity to VPD in the Northern Hemisphere. The interactions between VPD and temperature/soil moisture not only offset the potential positive impact of warming on vegetation productivity, but also amplify the negative effect of soil drying. Notably, there is a pronounced shift in vegetation productivity's response to VPD in high-latitude ecosystems when VPD surpasses a threshold of 3.5 to 4.0 hectopascals.
Article
Engineering, Civil
Chi Zhang, Xu Zhang, Qiuhong Tang, Deliang Chen, Jinchuan Huang, Shaohong Wu, Yubo Liu
Summary: Precipitation over the Tibetan Plateau is influenced by systems such as the Asian monsoons, the westerlies, and local circulations. The Indian monsoon, the westerlies, and local circulations are the main systems affecting precipitation over the entire Tibetan Plateau. The East Asian summer monsoon primarily affects the eastern Tibetan Plateau. The Indian monsoon has the greatest influence on precipitation in the southern and central grid cells, while the westerlies have the greatest influence on precipitation in the northern and western grid cells. Local circulations have the strongest influence on the central and eastern grid cells.
JOURNAL OF HYDROLOGY
(2024)